/*
* Copyright (c) 2003, Adam Dunkels.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote
*    products derived from this software without specific prior
*    written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This file is part of the uIP TCP/IP stack.
*
* $Id: shell.c,v 1.1 2006/06/07 09:43:54 adam Exp $
*
*/

#include "uip_shell.h"

#include <string.h>

struct ptentry {
	char* commandstr;
	void (* pfunc)(char* str);
};

#define SHELL_PROMPT "uIP 1.0> "

/*---------------------------------------------------------------------------*/
static void
parse(register char* str, struct ptentry* t)
{
	struct ptentry* p;

	for(p = t; p->commandstr != NULL; ++p) {
		if(strncmp(p->commandstr, str, strlen(p->commandstr)) == 0) {
			break;
		}
	}

	p->pfunc(str);
}
/*---------------------------------------------------------------------------*/
static void
inttostr(register char* str, unsigned int i)
{
	str[0] = '0' + i / 100;

	if(str[0] == '0') {
		str[0] = ' ';
	}

	str[1] = '0' + (i / 10) % 10;

	if(str[0] == ' ' && str[1] == '0') {
		str[1] = ' ';
	}

	str[2] = '0' + i % 10;
	str[3] = ' ';
	str[4] = 0;
}
/*---------------------------------------------------------------------------*/
static void
help(char* str)
{
	shell_output("Available commands:", "");
	shell_output("stats   - show network statistics", "");
	shell_output("conn    - show TCP connections", "");
	shell_output("help, ? - show help", "");
	shell_output("exit    - exit shell", "");
}
/*---------------------------------------------------------------------------*/
static void
unknown(char* str)
{
	if(strlen(str) > 0) {
		shell_output("Unknown command: ", str);
	}
}
/*---------------------------------------------------------------------------*/
static struct ptentry parsetab[] = {
	{"stats", help},
	{"conn", help},
	{"help", help},
	{"exit", shell_quit},
	{"?", help},

	/* Default action */
	{NULL, unknown}
};
/*---------------------------------------------------------------------------*/
void
shell_init(void)
{
}
/*---------------------------------------------------------------------------*/
void
shell_start(void)
{
	shell_output("uIP command shell", "");
	shell_output("Type '?' and return for help", "");
	shell_prompt(SHELL_PROMPT);
}
/*---------------------------------------------------------------------------*/
void
shell_input(char* cmd)
{
	parse(cmd, parsetab);
	shell_prompt(SHELL_PROMPT);
}
/*---------------------------------------------------------------------------*/
